DP Chemistry (last assessment 2024)
Question 18M.3.hl.TZ2.b.ii
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.hl.TZ2.b.ii |
| Level | hl | Paper | 3 | Time zone | TZ2 |
| Command term | Deduce | Question number | b.ii | Adapted from | N/A |
b.ii.
[Maximum mark: 1]
18M.3.hl.TZ2.b.ii
Vanadium forms a body centred cubic (BCC) crystal structure with an edge length of 303 pm, (303 × 10−12 m).
Vanadium(IV) ions can create free radicals by a Fenton reaction.
Deduce the equation for the reaction of V4+ with hydrogen peroxide.
[1]
Markscheme
V4+(aq) + H2O2(aq) → V5+(aq) + OH–(aq) + •OH(aq)
Do not accept • on H.
Accept answer without •
[1 mark]
